Thanks for the video, watched it and saw there are anomaly in your video on how your Windows explorer work. Is there some sort of addon or tweaks applied to it? I saw the scrollbar blinking and Curtains side tabs button blinking which and your Explorer background and scroll area in different color. (refer screenshot below) I can't open that copy/move windows when I need to copy something.
For me, just select files or folders, right click on it, menu open, click copy or move, here, no Windows open for me to select folder to copy or move to. I will than just navigate my Explorer to that folder I want to put those file or folder and right click again in there. Select paste. And it copy/move there. No windows come up.
So I believe what ever you saw is an add on and that add on does not comply to Windows 10 Dark theme changes.
If so, please try disable it.
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